Spicule radial velocities, and the coronal condensation mechanism of spicule formation

Details Spicule radial velocities, and the coronal condensation mechanism of spicule formation Spicule radial velocities, and the coronal condensation mechanism of spicule formation

Aug 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978azh....55..786m&link_type=abstract

(Astronomicheskii Zhurnal, vol. 55, July-Aug. 1978, p. 786-794.) Soviet Astronomy, vol. 22, July-Aug. 1978, p. 451-456. Transla

Physics

Condensation, Radial Velocity, Solar Corona, Spicules, Solar Physics, Stellar Models

Scientific paper

The time variations in the radial velocity of 90 spicules at various heights have been investigated on the basis of data acquired with a scanning device. The radial-velocity curves vary synchronously over the full height range of a spicule; the mean radial velocity is approximately 19 km/sec. If spicules were to represent an upward flow of gas from below, serious difficulties would arise in explaining the mass balance of the corona. Various results indicate that spicules may be formed through condensation of coronal gas. Several supporting arguments are given for such a mechanism.

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